Automatically-threading shuttle.



E. S. STIMP$ON. AUTOMATICALLY THREADING SHUTTLE.

APPLICATION FILED NOV. 9, 1911.

1,,017,065 Patented Feb.13,1912.

EDWARD s. srmrson, or HOPEDALE, massacnusn'rrs, sssrenon TO DRAIEB COMPANY, or HOPEDALE, MASSACHUSETTS, A. CORPORATIONIOF MAINE.

AUTOMATICALLY-READING SHUTTLE.

Specification of Letters Ilatent.

Application filed November 9, 1911. Serial No. 659,290.

To all whom it may concern:

Be it known that I, EDWARD S. STIMIPSON, a citizen of the United States, and resi dent of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Automaticall -Threading Shuttles, of which the followlng description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.-

This invention relates particularly to loomshut-tles of the ty e wherein the threading operation is elfiected automatically, and it has for its object theproduction of a loom-shuttle of the type referred to provided with a novel and improved eyemember, so constructed and arranged that it is held securely and positively in position in the shuttle body. By the improved construction hereinafter described I am also able to employ an eye-member of porcelain, glass, or other suitable vitreous material .when the use thereof is desirable.

In United States Patent No. 933,497 granted to me September 7, 1909, the eyemember is a longitudinally slotted tube of metal, such as hardened steel, fitted into a circular hole in the shuttle-body. This form of eye-member is held from rotative and longitudinal movement by engagement with a part of the sheet-metal threading device, and is entirely satisfactory in many cases, but in certain kinds of weaving the filling is of such a character that it tends to cut or score the metal of the eye-member, causing frequent filling breaks.

In the old forms of hand-threaded shuttles a tubular vitreous eye is of common'occurrenoe; and it resists the cutting or scor ing action of practically any kind of filling, but this material cannot be used in making an eye-member of the character referred to because of its fragile nature, the shock and jar to which the shuttle is subjected in Weaving fracturing the eye-member.

In my present, invention I have devised a novel form of eye-member for use in automatically threading shuttles, so constructed that it is held positively and securely in its seat in the shuttle-body Without any possibility of turning or moving in the direction of its length.

scribed can be made of metal, or of vitreous material when desired, and when made of Patented Feb. 13, 1912.

the latter material it is not liable 'to fracture, the peculiar structure enabling the eye-member to resist the shock orhammering to which the shuttle issubjected.

The various novel features ofmy invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a top plan view of the threaddelivering or eye end of a loom-shuttle embodying my present invention Fig. 2 is a side elevation thereof, the shuttle-body being partly broken out to show a portion of the positioning and retaining flange of the eye-member; Fig. 3 is a similar view but with the eye-member and the threading member omitted; Figs. 4 and 5 are perspective views ofthe eye-member, detached,

viewed from its outer and inner ends, re-

verse U-shaped recess 2 extended through the side wall of the shuttle. As shown in Figs. 1, 2 and 3 this recess has its upright sides and curved bottom provided with a continuous groove 3, which is symmetrical in contour with the recess. This grooved recess can be very easily and quickly formed in the side wall of the shuttle by a suitable milling tool, and a circular'saw, or a combination of the two, the bottom of the recess and the groove being circular, as shown.

The eye-member B, shown separately in Figs. 4; and 5, fits in the recess 2, and will be again referred to, thethreading member C, Figs. land 2, being fitted into the thread passage 1 and retained therein by a suitable bolt DI' This threading member C is substantially that shown in my patent above referred to, and is made of sheet metal bent and shaped to assume control of the filling thread and to direct and guide it automatically into the eye-member. v Inasmuch as the construction and functions of the threading member are well known no further. description thereof is necessary, except to state that the thread traverses the trough-like portion on its -wa to the eye-member, and that the latter is old down in its seat by the usual rojection or head '0' of the threading mem er, as will be-gxplained.

Referring now to Figs. 4 and 5, the eyemember B comprises a thick, strong body 4,. externally U-shaped and of such dimensions eye-member is held positively and securely from endwise movement in the side wall of the shuttle, the corresponding shapes of the flange and the groove 3 preventing anytendency of the eye-member to rotate. The delivery passage 6 in the bod of the eye-mem- 1 her is provided with a V-s aped inlet at the top of the body 4, the sides of the inlet being formed by the flared surfaces 7 8 constituting the upper end of the body, the upper ends of the flange 5 terminating at said flared surfaces. When the eye-member B is seated in the recess 2, see Figs. 1 and 2, the projection or head 0 of the threading member C overhangs and seats upon the flared side 7 ofthe Vshaped inlet, retaining the eye-member seated in the recess, and the said flared side extends inward and abuts against the trough-like portion 0 of the threading member C. The clearance between the other flared side 8 of the inlet and the forward edge of the head opermits the thread to travel through the V-shaped inlet into the delivery passage 6 of the eyemember during the threading operation, as will be manifest to those skilled in the art.

As :shown in Fig. 5-the inner end of the body 4; is, cut away at 9 to leave ample room for the thread as it is directed from the. longitudinal thread passage to the transverse elivery passage 6.

By virtue of the shape and construction of the eye-member and the transverse recess and roove in which it fits the eye-member is he d firmly but without any undesirable pressure in its proper, position, so that it cannot move endwise or axially, and it is kept properly seated by the overhanging part c of the threading member.

, By reason of the thick. and stocky body 4 of the eye-member, and the strong external flange thereon, said member can when desired be made of porcelain or other suitable vitreous material, which is so disposed that there is very little tendenc to fracture.

J Whatever the material 0 the eye-' member it cannot become displaced by slight shrinkage of the shuttle-wood, for in all cases the upright opposite sides of the recess act upon the adjacent straight sides of; the body 4;, and the flange 5 is under all circumstances seatedin the groove 3. 7 With a tubular eye- 5 member there is a tendency to turnandwork loose unless the fit of such member in the shj ittle bo'dy made very accurately, and even then a slight shrinkage of the wood will tend to loosen up the eye-member in a very objectionable way. I

Having fully described my invention, what I claim as new and desire'to secure by Letters Patent is 1. A shuttle having a thread passage in the end portion thereof, and a transverse U-shaped recess leading therefrom through the side-wall of the shuttle, said recess having its sides and bottom provided with a continuous groove, and an eye-member comprising a U-shaped body having an open.

thread inlet at its top, and adapted to fit in said recess, and havin between its inner and outer ends an externa integral and s mmetrical positioning flange to eat in t e con-.

tinuous groove of sa1d rec ss and prevent rotative or endwise movement of the eyemember.

2. A shuttle having a thread passage in v the end portion thereof, and a transverse U-shaped recess leading therefrom through the sidewall of the shuttle, said recess having its sides and bottom provided with a continuous groove, and an eye-member comprising a U-shaped body having a V-shaped 1nlet at its top and adapted to fit in said recess and havmg an external, integral and symmetrical positioning flange to seat in the groove of said recess and prevent rotative and endwise movement of the eye-member, combined with a threading member detachably mounted in said thread passage and having a projection overhanging and seating upon one of the flared sides of the V-shaped inlet, to retain the latter seated in the recess.

3. A shuttle having a thread passage in the end portion thereof, and a transverse U-shaped recess leading therefrom through the side-wall of the shuttle, said recess having its sides and bottom provided with a continuous groove, and an eye-member comprising a U-shaped bod having a V-shaped inlet at its top and a aptedto fit in said recess and havin an external, integral and symmetrical posltioning flange to seat in the groove of said recess and prevent rotative and endwise movement of the eye-member, combined with a threading member detachably mounted. insaid thread passage and having a projection overhanging and seated upon one of the flared sides of the V-shaped inlet, to retain the latter seated in the recess, said flared side extending inward and abutting at its inner end against a portion of the threading member.

4. An eye-member for a self-threading shuttle comprising a U-shaped body having a delivery passage and a V-shaped inlet at In testimony whereof, I have signed my its top leading into said passage and havname to this specification, in the presence ing between its inner and outer ends an exof two subscribing Witnesses.

ternal, integral and U-shaped positioning v EDWARD S. STIMPSON. 5 flange symmetrical with. the body, and ter- "Witnesses:

minating at the flaring *sides of said V- E. D. Oseoon shaped inlet. C. W. PECKHAM. 

